Is all tanzanite heat treated?
Although some dealers may tell you they have unheated stones, it is best to take this with a pinch of salt. The accepted wisdom is that all Tanzanite is heated. Unheated the stone is a brownish colour and only after heating does it go blue/violet. Some crystals have admittedly been heated in the ground and are already blue but will generally be heated again anyway as the color always improves further. Stones are heated at 600 degrees celcius in a gemological oven for a short time. Further information is available at <a href=http://www.lapigems.com/tanzanite.asp</a>
It's just a name assigned to this color stone from Jewelry Television (JTV) with their trademark on it. They used to call it green tanzanite and claimed that it was a cross between tsavorite and tanzanite and now they are saying that they don't know what causes this color. Their are green tanzanites and even pink tanzanites but JTV calls them all ocean tanzanite.
Actually neither term is correct. Tanzanite is a variety of the mineral Zoisite. Quartz and Diamond are minerals in their own right and there is absolutely no connection between the 3 of them. They all have unique physical and chemical properties. Anyone trying to sell "Tanzanite Quartz" is most likely selling Amethyst (Amethyst is the purple variety of Quartz) and anyone selling Tanzanite Diamond is simply being unscrupulous. There is no such thing. You might…
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What is the value of the tanzanite necklace that was used for the Heart of the Ocean in the movie Titanic?
tanzanite retails for approx $1200 to $2000 per carat 16 carats so that would be in the area of $16 to $20,000 Tanzanite prices has increased a lot .. Today Tanzanite which were in Titanic would be around $2000 to $5000 per carat..and that Heart shape was around 50 carats that would be around $170,000. You can Buy Fine Loose Tanzanite, Tanzanite rings, Tanzanite Jewelry and much more from mohranet.com; see link. Gemstone Bracelets, Gemstone…